ZIP code
95917
in Biggs, CaliforniaPopulation 3,752
46.90/ 100
Ranked #20,280 of 32,066 US ZIPs (bottom 37%)
Ranked #1,235 of 1,719 California ZIPs (bottom 28%)
Ranked #7 of 18 Chico, CA ZIPs (top 39%)
Ranks are modeled estimates — ZIPs a few hundred places apart are effectively tied.
What defines this ZIP
Metrics where this ZIP sits in the tails of the national distribution — the ones that most set it apart. Select any tile for its definition and methodology.
Air-toxics cancer risk
49.9 per million
in the top 1.0% nationally
Lower is healthier
ST93rdUS99thDefinition & source ›
The EPA’s modeled estimate of added lifetime cancer risk from breathing outdoor air toxics, in cases per million people exposed over a lifetime.
Full methodology ›Outer-floodplain exposure
21.3%
in the top 1.9% nationally
Lower is healthier
ST94thUS98thDefinition & source ›
The share of this ZIP’s land area inside FEMA’s 0.2%-annual-chance flood band — the “500-year” zone, a lower but real 1-in-500 yearly chance.
Measured from FEMA’s mapped flood panels. Where a panel has not been mapped, no value is published for that ZIP — those ZIPs are absent from this comparison rather than counted as unexposed.
Full methodology ›Fine-particle (PM2.5) exceedance
3.5%
in the top 2.0% nationally
Lower is healthier
ST79thUS98thDefinition & source ›
The share of days in the year when modeled fine-particle (PM2.5) pollution was above the EPA’s daily limit of 35 micrograms per cubic meter.
Full methodology ›Natural-disaster risk
in the top 2.8% nationally
Lower is healthier
ST89thUS97thDefinition & source ›
This area’s national rank on its single highest non-flood natural hazard — such as wildfire, tornado, or earthquake — in FEMA’s modeled National Risk Index; flooding is shown separately.
Full methodology ›Floodplain exposure
54.3%
in the top 3.3% nationally
Lower is healthier
ST97thUS97thDefinition & source ›
The share of this ZIP’s land area inside FEMA’s 1%-annual-chance floodplain — the “100-year” flood zone, where flooding has about a 1-in-100 chance in any given year.
Measured from FEMA’s mapped flood panels. Where a panel has not been mapped, no value is published for that ZIP — those ZIPs are absent from this comparison rather than counted as unexposed.
Full methodology ›Dry extreme heat
85.9 days/year
in the top 4.0% nationally
Lower is healthier
ST86thUS96thDefinition & source ›
The average number of days per year with a modeled daily high of at least 95 °F.
Full methodology ›Unemployment rate
12.0%
in the top 6.5% nationally
Lower is healthier
ST90thUS94thDefinition & source ›
The share of the civilian labor force that is unemployed.
Full methodology ›Fatal road crashes
37.3 per 100,000 residents per year
in the top 8.2% nationally
Lower is healthier
ST92ndUS92ndDefinition & source ›
The annual rate of fatal road crashes per 100,000 residents, pooled over a ten-year window.
A rate per resident population. Where a ZIP has too few residents for the rate to be reliable — about 30% of US ZIPs — no value is published rather than an unstable one; those ZIPs are absent from this comparison, not counted as crash-free.
Full methodology ›The read
By the composite health measure, Biggs, California (ZIP 95917) ranks in the bottom 37% nationally (20,280th) and the bottom 28% of California (1,235th).
Several measures weigh most on this area's profile, and they come first: modeled air-toxics cancer risk settles in the top 1.0% nationally, and outer-floodplain exposure resides in the top 1.9% nationally. Modeled fine-particle registers in the top 2.0% nationally, and disaster risk rests in the top 2.8% nationally. Floodplain exposure stands in the top 3.3% nationally, modeled extreme heat lies in the top 4.0% nationally, and unemployment lands in the top 6.5% nationally. Fatal road crashes sits in the top 8.2% nationally. Fiber broadband is at the national minimum, shared with about 19% of ZIPs. Modeled transportation noise settles in the top 10.5% nationally.
Read against the ZIPs closest to it, outer-floodplain exposure runs far higher than the surrounding ZIPs on this measure. To spell things out, air-toxics cancer risk is a modeled EPA estimate of added lifetime cancer risk from breathing outdoor air, per million people. Fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. Disaster risk is the area's national rank on its highest non-flood peril in FEMA's modeled Risk Index, like wildfire or quake. Close by, ZIP 95974, about 2.0 miles away, ranks healthier overall.
What’s driving this score
Nine domains make up the ZipVitals Score — here is how this ZIP does on each, and how much each one counts. Compare it against the US, this state and the Chico, CA metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Chronic Disease Burden
healthier than 77%
21%
Risk Behavior
healthier than 67%
11%
Healthcare Access
healthier than 70%
5%
About typical
Disability
healthier than 56%
7%
Holding it back
Social Need / SDOH
healthier than 23%
16%
Environmental Hazard
healthier than 3%
14%
Preventive Care
healthier than 20%
13%
Mental Health
healthier than 35%
8%
Climate / Disaster Risk
in the bottom 0.5%
5%
Nothing measured is lifting this score.
About typical
Chronic Disease Burden
healthier than 44%
21%
Preventive Care
healthier than 42%
13%
Risk Behavior
healthier than 43%
11%
Disability
healthier than 53%
7%
Healthcare Access
healthier than 46%
5%
Holding it back
Social Need / SDOH
healthier than 29%
16%
Environmental Hazard
healthier than 16%
14%
Mental Health
healthier than 25%
8%
Climate / Disaster Risk
healthier than 2%
5%
Lifting this score
Chronic Disease Burden
healthier than 75%
21%
Risk Behavior
healthier than 69%
11%
Mental Health
healthier than 75%
8%
Disability
healthier than 75%
7%
Healthcare Access
healthier than 63%
5%
About typical
Social Need / SDOH
healthier than 44%
16%
Holding it back
Environmental Hazard
healthier than 38%
14%
Preventive Care
healthier than 38%
13%
Climate / Disaster Risk
in the bottom 0.00%
5%
“Share” is how much of this ZIP’s score the domain accounts for. Percentages are rounded; higher is healthier in every domain. How the score works, and who it compares you with ›
Findings that name this ZIP
One of our published findings lists this ZIP code. Each finding compares one published measure against a stated benchmark, and names only the ZIP codes whose estimates are reliable enough to rank. See all surprising findings.
Heavy environment, light chronic burden
Where the environment and chronic illness point in opposite directions
Environmental-hazard standing 3.4 (bottom 10%); chronic-disease standing 77.4 — 74 points apart, heavier on the environment than it is on chronic illness.
Ranked #16,737 of the 18,187 ZIP codes this finding names, ordered by the gap from cleanest environment to heaviest chronic burden, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
95920
Californiashares a border
Score 43.33
Closest healthier
95974
Californiaabout 2.0 mi away
Score 48.61
Similar health profile
93277
California98% similar profile
Score 47.91
How these were chosen: only ZIPs with a published Score appear — a nearby ZIP with too little data to score won’t. Nearby means closest by distance between ZIP boundaries, which can cross state lines. A similar health profile is a close match across the nine Score domains, not similar demographics. Distances are measured between ZIP boundaries — ZIPs that touch share a border. How distance is measured
Evidence
Every measure this page draws on, by source. Collapsed by default — the full data stays in the page for search engines either way.
Health OutcomesCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Arthritis among adults | 24.3% | 21.5–27.2 |
| High blood pressure among adults | 32.6% | 28.9–36.3 |
| Cancer (non-skin) or melanoma among adults | 8.2% | 7.4–9.0 |
| Current asthma among adults | 10.1% | 9.0–11.4 |
| Coronary heart disease among adults | 6.3% | 5.6–7.0 |
| Chronic obstructive pulmonary disease among adults | 6.3% | 5.5–7.2 |
| Depression among adults | 23.9% | 20.5–27.4 |
| Diagnosed diabetes among adults | 10.9% | 9.5–12.5 |
| High cholesterol among adults who have ever been screened | 35.2% | 31.2–39.2 |
| Obesity among adults | 29.6% | 23.5–36.1 |
| Stroke among adults | 3.4% | 3.1–3.7 |
| All teeth lost among adults aged >=65 years | 12.4% | 10.0–15.0 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 9.6% | 8.1–11.5 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 72.1% | 68.6–75.2 |
| Visits to doctor for routine checkup within the past year among adults | 72.5% | 68.5–76.4 |
| Cholesterol screening among adults | 85.9% | 84.0–87.7 |
| Colorectal cancer screening among adults aged 45–75 years | 62.1% | 56.8–67.0 |
| Visited dentist or dental clinic in the past year among adults | 62.9% | 59.3–66.3 |
| Mammography use among women aged 50-74 years | 72.3% | 64.2–79.2 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 17.7% | 14.7–21.1 |
| Current cigarette smoking among adults | 12.7% | 10.8–14.9 |
| No leisure-time physical activity among adults | 23.3% | 19.5–27.6 |
| Short sleep duration among adults | 33.0% | 27.1–39.0 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 21.3% | 18.7–24.3 |
| Frequent mental distress among adults | 17.9% | 16.0–20.0 |
| Frequent physical distress among adults | 14.2% | 12.6–16.1 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 15.3% | 13.6–17.2 |
| Any disability among adults | 31.6% | 27.5–35.9 |
| Hearing disability among adults | 6.7% | 6.0–7.6 |
| Independent living disability among adults | 8.3% | 7.4–9.4 |
| Mobility disability among adults | 14.5% | 12.5–16.5 |
| Self-care disability among adults | 3.9% | 3.5–4.3 |
| Vision disability among adults | 5.2% | 4.7–5.7 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 26.2% | 22.6–30.3 |
| Food insecurity in the past 12 months among adults | 15.1% | 12.6–17.6 |
| Received food stamps in the past 12 months among adults | 13.6% | 11.5–15.8 |
| Housing insecurity in the past 12 months among adults | 13.3% | 11.3–15.4 |
| Lack of reliable transportation in the past 12 months among adults | 8.3% | 7.2–9.4 |
| Loneliness among adults | 34.7% | 29.9–40.1 |
| Utility services shut-off threat in the past 12 months among adults | 6.7% | 5.8–7.7 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | CA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 7.2% | 10.6% (3.1–25.8%) n=32,364 | 10.6% (4.1–24.9%) n=1,714 |
| Uninsured 18–64 | 9.2% | 9.0% (1.5–24.3%) n=32,286 | 7.7% (1.7–17.9%) n=1,704 |
| No HS diploma (25+) | 10.7% | 7.9% (1.8–20.7%) n=32,505 | 9.8% (1.4–30.9%) n=1,729 |
| Bachelor's or higher (25+) | 14.1% | 23.3% (9.2–53.6%) n=32,505 | 31.3% (9.9–68.2%) n=1,729 |
| Unemployment rate (16+) | 12.0% | 3.9% (0.0–9.8%) n=32,274 | 6.1% (0.8–12.0%) n=1,714 |
| Households without a vehicle | 5.8% | 3.9% (0.0–12.5%) n=32,322 | 4.5% (0.0–12.2%) n=1,708 |
| Broadband subscription | 95.1% | 89.3% (75.1–97.1%) n=32,322 | 93.4% (82.1–98.4%) n=1,708 |
| Housing cost burden (≥30% income) | 28.4% | 23.7% (10.6–40.0%) n=32,322 | 38.6% (24.4–50.5%) n=1,708 |
| Homeownership rate | 70.6% | 78.7% (51.7–94.0%) n=32,322 | 64.1% (31.9–86.4%) n=1,708 |
| Crowded housing (>1 per room) | 3.5% | 1.3% (0.0–6.3%) n=32,322 | 4.8% (0.0–15.9%) n=1,708 |
| Foreign-born population | 8.5% | 2.6% (0.0–18.6%) n=32,553 | 18.9% (3.0–40.4%) n=1,730 |
| Single-parent households | 43.9% | 53.6% (37.3–74.1%) n=32,087 | 48.4% (35.1–72.3%) n=1,692 |
| Population 65+ | 13.6% | 19.4% (10.8–33.6%) n=32,553 | 17.0% (9.7–35.7%) n=1,730 |
| Median age | 32.2 yr | 42.2 yr (33.0–56.3) n=32,292 | 40.1 yr (31.8–57.0) n=1,712 |
| Median household income | $90,563 | $72,070 ($46,039–$118,707) n=30,318 | $93,448 ($54,188–$159,562) n=1,584 |
| Median home value | $362,800 | $222,200 ($100,300–$579,820) n=30,049 | $659,800 ($300,520–$1,493,340) n=1,593 |
| Median gross rent | $898 | $1,021 ($677–$1,912) n=25,670 | $1,912 ($1,113–$2,923) n=1,461 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | CA median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 80.7 yr ± 2.12 | 78.9 yr (74.7–82.8) n=31,308 | 80.5 yr (76.7–83.8) n=1,665 |
About the ± — it’s this estimate’s give-or-take (statisticians call it the standard error). The true life expectancy for this ZIP most likely falls within 2.12 years of 80.7, and it’s very unlikely to be off by more than twice that.
More ZIPs to explore ▾More ZIPs to explore ▴
How these lists were built: they draw only from ZIPs that have a published Score, so ZIPs with too little data to score are not listed. Distance-based lists use distance between ZIP boundaries with no state filter, so an out-of-state ZIP can appear. Statistically similar means a close match across the nine Score domains, not a demographic match: the measure is the cosine similarity between two ZIPs’ domain scores, taken over the domains both ZIPs have data for and only where that overlap covers at least six of the nine — and where no ZIP clears that minimum-overlap floor, that list is left out rather than filled with a weak match. How distance is measured